Tire-core binder



i E. G. RUPERT.

TIRE CORE BINDER.

APPLICATION FILED APR. 27. 1920.

1,369,549. Patented Feb. 22, 1921.

UNITED STATES EDWARD GIDEON RUPERT, OF TRENTON, NEW JERSEY, ASSIGNOR OF ONE-HALF TO- DONALD W. RUPERT, OF TRENTON, NEW JERSEY.

TIRE-GORE BINDER.

Specification of Letters Patent. P te ted Feb. 22, 1921. I

Application filed April 27, 1920. Serial N 0. 376,963

To all whom it may concern:

Be it known that I, EDWARD GIDEON RUP- rnnr, a citizen of the United States of America, residing at Trenton, in the county of Mercer and State of New Jersey, have invented new and useful Improvements in TireCoreBinders, of which the following is a specification.

In the ordinary method of tire construction, it is common practice to employ a knock-down or break-down core' of wood, metal or equivalent material, comprising a plurality of separable sections or members including what is known as the wedge or guide member, adapted when in assembled relation to form a complete circular core upon which the tire composed of rubber fabric is completed and formed and; which after the completion of the vulcanizing step in the procedure is broken down or disassembled andwithdrawn from the tire.

Various means have been devised and employed for maintaining the sections or members of the core in their assembledrelation during the building or vulcanizing of the tire, and each of the structures thus employed has been shown to contain one or more objections such as-initial cost of production, uncertainty as to maintaining a proper alinement or positioning of the members or sections of the core, lack of durability, difficulty in assembling or releasing the members or sections,;the possibility of the retaining means becoming displaced particularly after a limited use. of the device, the liability of employing a multiplicity of small fastening devices, the liability of breakage under roughusage to which a device of this type is ordinarily subjected, and the like, and it is the purpose to avoid these objections and particularly to provide a combination involving a small initial cost, and a means which will insure the accurate alinement and substantial locking of the members or sections of the core in their proper relations and the durability of the locking means, to the end that said means may have a life and period of usefulness at least equal to the core. With these objects in view, the invention consists of the construction and combination of parts, of which a preferred embodiment is shown in the accompanying drawings, wherein Figure 1, is a side view of a core provided 'with the tire ring or element embodying the invention. I

Fig. 2, is a transverse sectional view of the same on the plane of the line 2-2 ot'Fig. 1.

The core embodies the members or sections 10 and the wedge or guide member 11 provided with the reduced tongue 12 which is enlarged to form the annular rim 13, and in construction is similar to those now in common use, associated with said rim'is a means for securing the members or sections of the mold in their assembled relation consisting of a binder ring 14 0f endless construction transversely or crosssectionally tapered to form outer and inner beveled or cam surfaces 15 and 16 for cooperation with beveled or cam surfaces 17 and 18constituting the upwardly divergent outer and'inner walls of a channel 19 formedin the annular rim 13.

The binder ring 14: is perforated as at 20 in registration with openings'2l in the rim for the reception of binder bolts 22 fitted wlth' assembly nuts '23, said bolts extending transversely through the binder ring and annular rim and preferably being arranged in pairs with a bolt on each side of the plane of the edge joint between the joining members or sections of the core.

The effect of the seating of the binder ring and'its tightening by means of the bolts is to center and adjust the core members or sections so as to secure accurate alinement or the registration thereof to theend that special care in assembling the memb'ersfis unnecessary. In other words the tightening 0t the binder ring serves to effect the proper relation between the-,members or sections and insure their proper location without special attention on the part of the operator, so that projecting edges of joining members or sections are eliminated. Moreover by affording a depth of seat or channel 19 somewhat in excess of the depth of the inwardly tapered portion of the binder ring as indicated in Fig. 2, so as to permit of a space to provide for the inward adjustment of the binder ring, any wearing of the contact surface ofthe ring or the walls of the seat or channel is compensated for and substantial binding action of the ring upon the rim members is always possible.

Obviously the breaking down or disassembling of the core may be effected simply by The fact that the alinement oft-he core members or sections is insured by the engagement of the binder ring therewith guards against the possibility of any proectmg edge or surface on the headof the core after the parts have been assembled and hence avoids injur'y'to the handsof the workmen in layingon the tire elements and during the rotation of the core incident to the buildin operation. I

'An addit onal advantage of the construction described rests in the fact that the assembling and disassembling of the core members may be effected with ease and rapidity and that thenumber of small parts necessary to be handledin this connection is minimized with practically the only possibility. of" the necessity for the renewal of a boltin the event that it should become I damaged or rendered ineffective by the stripping of the threads. The angle of divergence of. the side walls of the channel 19 is comparatively 1argethat is, it is sufficient to preclude any binding frictional engagement between the beveled edges of the binder ring and the side walls of the channel. Friction means for securingthe binder ring in place has beenheretofore employed and itis one of the purpose'sof the present invention to overcome the objections incident to the use of such construction. The provision of a channel'having side walls disposed at a wide angle of convergence, while it necessitates the use of fastening devices in connection with' ;the binder ring, makes always for the ready separation of the binder ring from the core sections and always permits 'thebinder ring to function in the manner of a cam to properly aline the core sections when the fastening' devices arebeing'tightened up.

The invention having been described, 'what .is'claimed as new and useful is e H 1,1; g A knockdown 't rej core cons sting of I ing the binder ring to said rim, the rim be i ngprovided with an annular seat or channel having convergent inner and outer walls and the ring being transversely tapered and having inner and outer convergent bearing surfaces in contact respectively with the walls of the said seat or channel.

2. A knock-down tire core consisting of separable sections having camming surfaces disposed at a wide angle of convergence, and a binder ring provided with means for securing the same to the sections and having corresponding complemental cam bearing surfaces. p p I V V,

3. A knock-down tire core consisting of separable sections provided with annular cam bearing surfaces disposed at a wide angle of'convergence, and a binderring pro v1 ing corresponding complemental cambearing surface's' 4. A knock-down tire core consistingof separable sections recessed to form when the sections are 1n assembled relation a channel the opposite side Walls of which are disposed at a wlde angle of convergence, a binder ringcross sectiona'lly shaped to correspond withsaid channeha fastening means. for securing said ri'ngto each of the sections of the'core. H 7 5. A knock-downtire coreconsisting of separable sections recessed to form'when' the sections are'in assembled relation a channel having widely divergent side walls; 'andja binder A ring cross sectionallysha' ed to 'c'or res maven; said channelj' provided wit means' for seciirement to' each ''ofthe sections, the narrow side faceof the ring being of greaterwidth thanthe'y width' at the bottom f thechannel to permit contact between theslahting' edges of the ring and corres onding' sid'es of thecharinel despite .the vvearon'thesame. 5'" In testimonywher'eof he affixes his signa V EDWARDJQIPEON' RUPERT; 

